H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 65/04 (2006.01) H01J 61/30 (2006.01) H01J 61/35 (2006.01) H01J 61/56 (2006.01)
Patent
CA 2145896
Disclosed is an electrodeless, low pressure gas discharge lamp. The lamp includes a vitreous envelope containing a metal vapor and an inert gas. The envelope is shaped with an external chamber for receiving an electrical excitation circuit. The excitation circuit is effective for exciting the metal vapor to emit light with electromagnetic fields that are passed through the vitreous envelope from outside, to inside, the envelope. A circuit supplies electrical power from power mains to the excitation circuit. A transparent, electrically conductive coating is disposed on the inner surface of the vitreous envelope forsuppressing coating is disposed interference on the power mains. An electricallyconductive coating is disposed on the outer surface of the vitreous envelope; itis capacitively coupled to the inner conductive coating, via a wall of the vitreous envelope, and is maintained at a suitable potential for suppressing electromagnetic interference on the power mains. The outer conductive coating comprises a matrix of a contiguous, inorganic, glass layer bonded to an exteriorsurface of the vitreous envelope, and conductive particles embedded in the matrix in a sufficiently dense manner to form a conductive coating.
Arsena Vito J.
Oberle Joseph C.
Scott Curtis E.
Vamvakas Spiro
Company General Electric
Wilson Craig
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